Car door



C. E. ERLIND July 15, 1941.

cA'R Doon Filed April 5, 1933 3 Sheets-Sheet erp.

July 15, 1941.

c. E. EKLIND CAR DOOR Filed April 5, 193e s sheets-sped 2 July 1s, 1941. c. E. EKU@ I2,249,520

' CAR voor: l l

Filed April 5, 193s s Smets-sheets "L /7Z-9 53; j

a3 as *9 @n/amd Patented July 15, 1941 CAR DOOR can E. Emma, chicago, r11., assigner to The Youngstown Steel Door Company, Cleveland, Ohio, a corporation of Ohio Application April 5, 1938, Serial No. 200,135 Y s claims. (c1.l 18s-46) This invention relates to car doors and is' con- A cerned more particularly with insulated swing-V ing doors for railway refrigerator cars. Y i

It is an object of this invention to provide refrigerator car doors which shall be of reduced. thickness and" so constructed that requisite strength and insulating value are maintained.

A further object is to provide refrigerator Ycar doors embodying outer corrugated metallic panels whereby doors of reduced thickness together with suicient strength and insulatingproperties may be secured. e

A further object is to provide refrigerator car doors of reduced thickness carrying l'ockin'g and operating mechanism on the outside wherein said mechanism shall lie inwardly of the outer plane of the `car walls. y

A further object is to provide refrigerator car doors of reduced thickness, requisite strength Yand insulating value and which shall lbe lighter in weight than known refrigeratorcar doors.

A further objectV is to provide refrigerator car doors having metallic frames to which wooden stiles and rails are adapted tov be v secured Yand outer corrugated metallic panels whose corrugations increase in width and depth in the direction of the hinged edges oi the doors.

A further object is toprovide refrigerator ca r doors having metallic frames to whichwooden stiles and rails are adapted to "be secured and Y outer corrugated metallic panels overlapping and secured to the outer face ofthevertical members of the frames and reinforced by stiifener4 plates secured to the inner face ofthe" panelsfand the lateral faces d of the vertical v members V yof the metallic frames. ,Y

Other objects of the invention will become clear as the description thereof proceeds." j In the drawings forming part of this speci-f cation: u l v t Figure 1 is Yan elevation of a portion of'a refrigerator car showing swinging doors embodying the invention.v Y y d Figure 2 is a horizontal section taken on line 2-2 of Figure 1. d

Figure 3 is a vertical section of Figure 1. Y Y

Figure 4 is a vertical vsectiont'akeno'nfline 4-4 ofFigurel.

takencn line 3-13 Figure 5 is a plan 'View of a'rcombined threshold' plate and keeper.

Figure 6 is an elevation of Figure 5. v 'Figure 7 is avertica-l section taken on-llne lf-1' of Figure 6. Y' i 'of the threshold 'plate Figure 8 isa vertical section taken on line 31-8 of Figure 6. ,i 4 ,Y

Figure -9 is a View `similar to Figure 3 showing a modified form of ysealing strip. v

Figure 10 isa detailed elevationshowing means for holding the overlapped door in open position. In the drawings which illustrate a preferred embodiment of the invention the numeral l0 designates the side wall of a refrigerator car. This wall as morer clearly shown in* Figure ZwofI the drawings may comprise outer metallic sheathing' I l secured to inwardly extending posts. The door posts are indicated at I2+l2. vAbut-ting these posts is the librous covering I3. The inner'wooden lining of the wall Ill is shown at =I4 and between the fibrous member I 3V and the inner wooden lining, insulating material l 5 is disposed. Within the angle formed by the ange I6 and web l1 of the door posts the wooden nailing strips l-I 8 are seated. The construction .of the refrigerator car wall hereinabove described is of well known construction and as such forms no part ofthe instant invention except as hereinafter indicated;

The door posts I2-I2 in Vconjunction witha .header AI9 and threshold plateZlldefine a door opening in the car wall I0 which is adapted to be closed lpreferably by the swinging overlapping doors 2|"and 22. The overlappedA door 2| comprises a metallic 'frame substantially rectangular 1 in shape. Y Thislframe is `formed by the vertical member 23V arranged with 'its flange 2'4 parallel to the car wall vlil and its' flange' 25eXtending inwardly therefrom at 'right anglesA to thecar wall. The other `vertical memberf 26 of 'theme-lv tallic frame is substantially .Z-shaped in section and isY arranged with its web 21 at right angles to the wall-of' the car *andV its flangesl 28 and 29y parallel thereto. `The flange 29 is oiset inwardly as indicated at 33 'for a reason whichwll later appear. The' rupperand lower horizontal inem--V bers 3i Aand 32 ofthe metallic frame are angular in cross 'section, the flanges 33 and 34 being ar V ranged lvertically andthe Aila-n'ges `35L andl V36 extending horizontally inwardly. Y

It will be observed from Figures2 and 3 Aoth'eV drawings Y that; the vertical frame member @23 lto which the hinges mount-ing the door; upon the carwall are secured extendsfoutwardly relative to the remaining frame members andflies sube stantially flush with the outer plane'ofv the car wall. A reinforcing Ymetallicjcovering panel 31,. is secured to the flanges of the metallic frame members which lieY substantially parallel-tothe wall ofthecar. The main portion pf `the metallic pane1 31 is also -ins'et relative to the outer-plane of the car wall as clearly shown in Figure 2 of the drawings. Adjacent the vertical frame member 23 the metallic panel is offset outwardly as indicated at 38 and extended into overlapping engagement with the ange 24 of the frame member 23 to which it is secured as by means of rivets 39. The metallic panel 31 is stiffened by means of a plurality of horizontal corrugations 40 which as clearly appears from Figures 1 and 2 of the drawings increase in width and depth as they approach the offset portion 38 of the panel.A Moreover, as shown in Figure 2 of the drawings the horizontal corrugations 4U merge into said offset portion of the metallic panel. Additional stiness -is imparted by means of stiiener plates 4| disposed in the space between the offset portion of the panel and the flange 25 of the vertical frame member 23 and preferably welded to the panel and the flange. cured by means of wooden blocks 42 and 43 disposed within the space above dened at the upper and lower edges kof the door. Y

A wooden nailing board 44 is seated within the re-entrant angle formed by the flanges 24 and 25 of the frame member 23. Similarly, a wooden nailing board 45 is seated within' the 're-entrant angle formed by the web 21 and outturned flange 28 of the substantially Z-shaped frame member 26.` Thesenailing boards are fastened to the frame members by means of bolts in the customary manner. 1

The metallic frame members in conjunction with the outer metallic covering panel provide a pocket 46 adapted for the reception of insulating material. The 'insulating material may be pre-formed and inserted as a unit within the pocket and is lof Vat least the Ysame insulating value as the insulation employed in the car wall I0. Preferably the insulation used in the door 2| comprises a pluralityv of strips of aluminum foil 41 secured between iibrous boards 48. 'I'he pocket 46 is closed and the insulation retained therein by means of a plywood panel 49 extending in across the pocket and fastened to the nailing boards 44 and 45. The plywood panel used in place of the customary tongue and groove boards lends stiiness to the door.

'I'he plywood panel, moreover, together with the metallic-covering panel 31 and the frame members 35 and 36 form pockets in the upper and lower portions of the door within which the' nailing boards 50 and 5| are secured.

, The construction of the overlapping door 22 is the same as the construction of the'overlapped door 2| except as noted below. In place of the front vertical Z member 21 of the metallic frame of the door 2| a `frontv Vertical angle 53 is utilized. This member is arranged with its flange 54 abutting the inside of the metallicv covering panel 52 and extending to the vertical edge of said panel. The othervflange 55 of the vertical frame member 53 extends inwardly atright angles to the wall of the car. A nailing Yboard 56 is seated within the 're-entrant angle formed by the flanges ofthe member 53.

Thedoors 2| and l22 as hereinabove indicated are overlapped. The metallic panel ofthe door 22 Vtogether with the ilange`54 of the vertical frame member 53 are extendedoutwardly beyond the board 56 as clearly shown in Figure 2 of the drawings so as to have overlapping engagement with the nailing board 45 carried at the frontV vertical margin of the door 2|. ".Il'ieverticalv margin olf-the door 22 is disposed; within the offset 30 formed in the lflange 29- of the Z frame mem- Additional stiffness is se' `gular in section and disposed within a correspondingly shaped recess 58 formed in the board 45. The sealing strip 51 is retained within the recess by means of a canvas covering strip 59.

Sealing of the upper margin of the door may be obtained by means of the spring pressed wooden board 60 seated within a correspondingly formed recess 6| of the wooden header I9 and the sealing strip 62 against which the board 60" bears. tion by means of a. canvas strip 63 nailed to header. 1

The bottom edge of the door is sealed by means of ra brous board 64 seated within a recess 65 formed in the threshold plate 20 hereinafter explained in greater detail. In addition, the lower edge of the door is sealed by means of asponge rubber strip 66 fastened to the inner face of the nailing board 5| and adapted to bear against'a metallic lmember 61 which covers the edge of the ooring of the car as appears from Figure 4 of the drawings.

From the foregoing, it will be apparent that a strong door, lighter in Weight than the presently known refrigerator car doors is produced and in addition, there is secured a door whose insulating qualities are not decreased while at the same time the thickness of the main portion of the door is reduced. By reason of the reduction in the thickness of the door, the operating and locking mechanism 68 is disposed upon the outside of the doors and within the outer plane of the car wall as more clearly indicated in Figures 2, 3, and 4 of the drawings. 'I'he operating and locking mechanism is of well known construction and embodies a vertical bar 69rotatably carried upon the outside of the overlapping door 22 by means of the upper and lower brackets 10 and 1|`and the intermediate bracket 12. A lever 13 is `utilized to impart rotation to the bar. Cranks 14 and 15 are secured to the upper and lower ends respectively of the bar 69 and are adapted to cooperate with the upper and lower keepers 16 and 11 carried respectively by the header I9 and .the threshold plate 20.

The sealing strip 62 is retained in posi-r the The doors 2| and 22 are hinged to the door posts yI2 by means of a pluralityof hinges 18 so disposed that only the knuckles and hinged pins are located outwardly of the car in theV nailing boards 44 by means ofthe spring pressed wooden vstrips 8 I,

In Figure 9 of the drawings a sponge rubber sealing strip 82 may be used to seal the upper s edge of the door in place of the members 60, 6|

cess 65 within which the iibrous board 64 is re-I this fashion the side sill angle is utilized toV strengthen the threshold plate.

In Figure of the drawings there is illustrat ed a device fastened to the outer face of the door 2| which provides an auxiliary locking means for the door in closed position and means for locking Y of rivets 9i. The locking bolt 89 is provided with a hook 92 at its lower end and when in open position this hook is adapted to engage and automatically lock behind a detent 93 carried by the member 94 fastened to the car wall I0.

It will be clear from the foregoing that the door of the instant invention is characterized by lightness, reduction in thickness, strength and proper insulating quality. The operating and locking mechanism for the doors is inset inwardly relative to the outer plane of the car Wall thereby eliminating the danger of destruction of this mechanism as a result of sideswiping of the cars.

This disposition of the operating and locking mechanism and lightness of the doors is obtained without detracting from strength and insulating value.

It will be apparent that numerous changes and modifications in the details of the invention will be clear to those skilled in the art. It is intended, therefore, that all such modifications and changes be comprehended within this invention, which is to be limited only by the scope of the claims appended hereto.

I claim:

l. An insulated door for refrigerator cars comprising a metallic frame embodying vertical and horizontal members, one of said vertical members extending outwardly beyond the remaining members, a metallic panel secured to said frame and forming a pocket therewith, said Panel lying inwardly of and being offset outwardly inrlaterally spaced relation to said one vertical member for securement to the outer facerthereof, stiffening members disposed between and secured to said panel offset and said one vertical member, wooden members fastened to said metallic frame, insulation in said pocket and a wooden panel fastened to said wooden members and closing said pocket.

2. An insulated door for refrigerator cars comprising a metallic frame embodying vertical and horizontal members, one of said vertical members extending outwardly beyond the remaining members, a metallic panel secured tov said frame and forming a pocket therewith, said panel lying inwardly of and being offset outwardly in laterally spaced relation to said one vertical member for securement to the outer face thereof, stiiiening members disposed between and secured to saidV tened to said wooden Vmembers and closing said pocket, said metallic panel being formed with a plurality of spaced horizontal corrugations iin-1 creasing in width and depth toward rsaid fone vertical member and merging into 'said panel off- 13. VAs an article offmanufacture. axcomposite metallic frame and metallic panel for afrefriger.- ator car door, said frame -comprising angular, horizontal and vertical members arranged in rectangular form, one of said vertical members extending outwardly beyond the remaining members of said frame, said metallic panel being secured to the outside of said remaining frameY members and being offset outwardly adjacent to said one vertical frame member and overlapped upon and secured to the outside thereof, said frame being adapted to receive wooden members and said panel and frame forming a pocket for the reception of insulating material.

4. As an article of manufacture a composite metallic frame and metallic panel for a refrigerator car door, said frame comprising angular, horizontal and vertical members arrangedy in rectangular form, one of said vertical members extending outwardly beyond the remaining members of said frame, said metallic panel being secured to the outside of said remaining frame members and being offset outwardly adjacent to said one vertical frame member and overlapped upon and secured to the outside thereof, said frame being adapted to receive wooden members and said panel and frame forming a pocket for the reception of insulating material, said metallic panel having spaced horizontal corrugation merging into said panel oiiset.

5. As an article of manufacture a composite metallic frame and metallic panel for a refrigerator car door, said frame comprising angular, horizontal and vertical members arranged-in rectangular form, one of said vertical members eX- tending outwardly beyond the remaining memev bers of said frame, said metallic panel being secured to the outsider of said remaining frame members and being offset outwardly adjacent to said one vertical frame member and overlapped upon and secured to the outside thereof, Vsaid frame being adapted to receive wooden members Y and said panel and frame forming a pocket for the reception of insulating material, 'and'stiffen-V ing plates interposed between and welded to said* panel offset and said one vertical frame member. 6. VIn a refrigerator car having an insulated wall provided with a door opening, a pair of overlapping insulated doors having bevelled meeting-V 7 lapping door'engaging respectively the sealingVV material secured to the outside and bevelled edge of the overlapped door, said outer portion engaging the overlapped door beyond the sealing mae terial whereby a triple seal is formed. f

7. An insulated doorfor refrigerator cars comprising metallic stiles, upper Vand lower metallic rails secured to said stiles and ak metallic panel,

one of said stiles extending outwardly beyond the other stile and said rails, said panel being secured to said stiles and rails and being offset.V

inwardly relative to ysaidrone stile, saidpanel, stiles and rails forming an inwardly opening pocket for the reception of insulation, wooden members secured to said stiles and rails, insula-V tion disposed in said pocket and a wooden panel fastened to said wooden members and. closing said pocket.

8. As an article of -manufacture a composite metallic frame for a refrigerator car door, said frame comprising angular metallic stiles. and upper and lower angular metallic rails secured to said Stiles, one of said stiles extending beyond the other-stile and said rails, said metallic panel being secured to said VStiles and rails and being offset inwardly relative to said one stile, said frame being adapted to receive Wooden members, said panel and frame forming a pocket for thereception of insulating material.

' CARL E. EKLIND. 

